Athlete · Open Men · 30-34 · NED NED

Stefan Grootkarzijn

www.roxtimes.com/athletes/stefan-grootkarzijn-d63db3e1

9 HYROX races over 3 seasons: 7 solo, 2 in a team with 2 partners.

Best Open Men time59:06Amsterdam 2026
Best Open Men place6thof 2,058 · Maastricht 2026
Latest race1:00:21Maastricht 2026 · Open Men1:15 slower than Stefan's best Open Men time (59:06)
Strongest part of the raceBurpee broad jumpfaster than 99% of Open Men at Amsterdam 2026
Personal bests

One best per race type

solo, doubles and relay times are different races, so each has its own best

Open Men: finish time, race by race

Oldest to newest; a line going down means getting faster
1:00:001:02:001:04:001:06:001:08:00 best 59:06 best 59:06 · Amsterdam

This line shows the finish time of Stefan Grootkarzijn at each race, oldest on the left; lower is faster.The best was 59:06 at Amsterdam (Jan 2026); Stefan Grootkarzijn was 9:07 faster at the latest race than at the first.

See the numbers
Race Date Division Finish
Heerenveen May 2025 Open Men 1:09:28
Maastricht Sep 2025 Open Men 1:06:50
Madrid Nov 2025 Open Men 1:02:41
Amsterdam Jan 2026 Open Men 59:06
Rotterdam Apr 2026 Open Men 1:00:25
Heerenveen May 2026 Open Men 59:19
Maastricht Sep 2026 Open Men 1:00:21

Each dot is one Open Men race; click one for that race's report. From the first Open Men race to the best: 10:22 faster (1:09:28 to 59:06).

Every race

9 results at 9 races

Tap a result for its full report
Open Men, 30-34 1:00:21 6th of 2,058; 2nd of 412 aged 30-34 31:16 24:22 4:47 Runs 31:16 · Stations 24:22 · Roxzone 4:47

6th of 2,058 Open Men (the fastest). Against the 31 who finished around 1:01:53: most time gained on burpee broad jump (0:44), most lost on the eight runs (0:36). Runs 5 to 8 took 1:55 more than runs 1 to 4 (them: 1:42 more).

Stefan Grootkarzijn at HYROX Maastricht 2026, Open Men: every split in race order, the typical split of Open Men at this race, and the share of the 2,058 Open Men finishers here who were slower on that part.
Part Time Typical here vs 2,058 Open Men here
Run 1: 3:00 3:44 faster than 92%
SkiErg: 4:09 4:29 faster than 92%
Run 2: 3:51 4:53 faster than 95%
Sled push: 2:24 2:57 faster than 86%
Run 3: 3:53 5:14 faster than 98%
Sled pull: 2:51 4:38 fastest in the field
Run 4: 3:58 5:13 faster than 96%
Burpee broad jump: 2:47 5:42 fastest in the field
Run 5: 4:01 5:20 faster than 96%
Row: 4:16 4:54 faster than 98%
Run 6: 4:06 5:15 faster than 94%
Farmers carry: 1:33 2:12 faster than 97%
Run 7: 4:02 5:14 faster than 96%
Sandbag lunges: 2:51 5:10 fastest in the field
Run 8: 4:28 5:51 faster than 95%
Wall balls: 3:31 6:54 fastest in the field
Roxzone: 4:47 7:40 faster than 99%
Runs (8 km) 31:16 40:54 faster than 96%
Stations (8) 24:22
Finish 1:00:21 1:26:02 6th of 2,058 · fastest in the field

Full report for this race →This result as data (JSON)

Doubles Mixed, team 30-34, with Joyce Veldhuis 1:21:07 1820th of 3,620; 552nd of 949 aged 30-34 43:08* 23:14* — Runs 43:08 · Stations 23:14 · Roxzone —

1,820th of 3,620 Doubles Mixed (faster than 49%). Against the 110 who finished around 1:21:01: most time gained on sandbag lunges (1:42), most lost on the eight runs (6:01). Runs 5 to 8 took 2:05 more than runs 1 to 4 (them: 3:14 more).

Stefan Grootkarzijn at HYROX Berlin 2026, Doubles Mixed: every split in race order, the typical split of Doubles Mixed at this race, and the share of the 3,620 Doubles Mixed finishers here who were slower on that part.
Part Time Typical here vs 3,620 Doubles Mixed here
Run 1: 4:52 3:55 faster than 5%
SkiErg: 4:01 4:18 faster than 86%
Run 2: 5:11 4:13 faster than 7%
Sled push: 1:58 2:18 faster than 83%
Run 3: 5:13 4:23 faster than 13%
Sled pull: 2:16 3:30 faster than 99%
Run 4: 5:17 4:28 faster than 15%
Burpee broad jump: 2:14 3:38 faster than 97%
Run 5: 5:12 4:34 faster than 21%
Row: 4:35 4:43 faster than 65%
Run 6: 5:11 4:33 faster than 20%
Farmers carry: 2:06 1:52 faster than 22%
Run 7: 5:08 4:36 faster than 25%
Sandbag lunges: 2:24 4:04 fastest in the field
Run 8: 7:08 6:23 faster than 26%
Wall balls: 3:40 4:32 faster than 94%
Roxzone: —
Runs (8 km) 43:08 37:09 faster than 16%
Stations (8) 23:14
Finish 1:21:07 1:21:01 1820th of 3,620 · faster than 49%

Full report for this race →This result as data (JSON)

Open Men, 30-34 59:19 11th of 1,771; 5th of 346 aged 30-34 30:37 23:42 5:04 Runs 30:37 · Stations 23:42 · Roxzone 5:04

11th of 1,771 Open Men (faster than 99%).

Stefan Grootkarzijn at HYROX Heerenveen 2026, Open Men: every split in race order, the typical split of Open Men at this race, and the share of the 1,771 Open Men finishers here who were slower on that part.
Part Time Typical here vs 1,771 Open Men here
Run 1: 3:37 4:32 faster than 92%
SkiErg: 4:01 4:26 faster than 96%
Run 2: 3:37 4:39 faster than 96%
Sled push: 2:26 2:45 faster than 74%
Run 3: 3:41 4:55 faster than 98%
Sled pull: 2:46 4:08 faster than 98%
Run 4: 3:43 4:57 faster than 97%
Burpee broad jump: 2:16 5:34 fastest in the field
Run 5: 3:55 5:07 faster than 96%
Row: 4:10 4:45 faster than 98%
Run 6: 3:53 4:58 faster than 95%
Farmers carry: 1:30 2:02 faster than 96%
Run 7: 3:54 4:59 faster than 96%
Sandbag lunges: 2:44 4:51 faster than 96%
Run 8: 4:21 5:36 faster than 93%
Wall balls: 3:49 6:43 faster than 98%
Roxzone: 5:04 7:49 faster than 98%
Runs (8 km) 30:37 40:03 faster than 97%
Stations (8) 23:42
Finish 59:19 1:23:49 11th of 1,771 · faster than 99%

Full report for this race →This result as data (JSON)

Open Men, 30-34 1:00:25 22nd of 2,721; 8th of 561 aged 30-34 31:16 25:06 4:08 Runs 31:16 · Stations 25:06 · Roxzone 4:08

22nd of 2,721 Open Men (faster than 99%). Against the 41 who finished around 1:01:45: most time gained on burpee broad jump (0:37), most lost on the eight runs (0:32). Runs 5 to 8 took 2:10 more than runs 1 to 4 (them: 1:06 more).

Stefan Grootkarzijn at HYROX Rotterdam 2026, Open Men: every split in race order, the typical split of Open Men at this race, and the share of the 2,721 Open Men finishers here who were slower on that part.
Part Time Typical here vs 2,721 Open Men here
Run 1: 3:37 4:54 faster than 98%
SkiErg: 4:10 4:45 faster than 98%
Run 2: 3:28 4:43 fastest in the field
Sled push: 2:04 2:44 faster than 93%
Run 3: 3:38 5:02 faster than 99%
Sled pull: 2:48 4:31 faster than 99%
Run 4: 3:52 5:06 faster than 97%
Burpee broad jump: 2:51 5:43 fastest in the field
Run 5: 4:07 5:11 faster than 93%
Row: 4:11 4:51 faster than 98%
Run 6: 4:00 5:07 faster than 95%
Farmers carry: 1:37 2:11 faster than 93%
Run 7: 4:05 5:08 faster than 94%
Sandbag lunges: 3:40 5:12 faster than 92%
Run 8: 4:33 6:03 faster than 96%
Wall balls: 3:45 7:15 faster than 99%
Roxzone: 4:08 6:55 fastest in the field
Runs (8 km) 31:16 41:33 faster than 97%
Stations (8) 25:06
Finish 1:00:25 1:26:30 22nd of 2,721 · faster than 99%

Full report for this race →This result as data (JSON)

Open Men, 30-34 59:06 11th of 2,802; 6th of 595 aged 30-34 30:44 24:17 4:09 Runs 30:44 · Stations 24:17 · Roxzone 4:09

11th of 2,802 Open Men (the fastest). Against the 43 who finished around 1:01:34: most time gained on burpee broad jump (0:51), most lost on the eight runs (0:10). Runs 5 to 8 took 2:14 more than runs 1 to 4 (them: 1:48 more).

Stefan Grootkarzijn at HYROX Amsterdam 2026, Open Men: every split in race order, the typical split of Open Men at this race, and the share of the 2,802 Open Men finishers here who were slower on that part.
Part Time Typical here vs 2,802 Open Men here
Run 1: 2:55 3:51 faster than 97%
SkiErg: 3:57 4:27 faster than 98%
Run 2: 3:38 4:46 faster than 98%
Sled push: 2:13 2:58 faster than 95%
Run 3: 3:49 5:05 faster than 97%
Sled pull: 3:09 4:43 faster than 98%
Run 4: 3:55 5:06 faster than 96%
Burpee broad jump: 2:29 5:24 fastest in the field
Run 5: 4:08 5:15 faster than 94%
Row: 4:05 4:44 faster than 99%
Run 6: 3:58 5:08 faster than 96%
Farmers carry: 1:26 2:01 faster than 96%
Run 7: 3:55 5:06 faster than 97%
Sandbag lunges: 2:54 5:06 faster than 99%
Run 8: 4:30 5:53 faster than 96%
Wall balls: 4:04 7:00 faster than 97%
Roxzone: 4:09 6:45 faster than 99%
Runs (8 km) 30:44 40:23 faster than 97%
Stations (8) 24:17
Finish 59:06 1:24:13 11th of 2,802 · fastest in the field

Full report for this race →This result as data (JSON)

Ghent 2025 12 Dec 2025
Race results
Doubles Men, team 30-34, with Twan Brusselman 55:34 9th of 1,448; 4th of 341 aged 30-34 30:05 21:18 4:14 Runs 30:05 · Stations 21:18 · Roxzone 4:14

9th of 1,448 Doubles Men (faster than 99%).

Stefan Grootkarzijn at HYROX Ghent 2025, Doubles Men: every split in race order, the typical split of Doubles Men at this race, and the share of the 1,448 Doubles Men finishers here who were slower on that part.
Part Time Typical here vs 1,448 Doubles Men here
Run 1: 3:56 5:02 faster than 96%
SkiErg: 3:30 4:02 fastest in the field
Run 2: 3:38 4:41 faster than 97%
Sled push: 1:35 1:52 faster than 89%
Run 3: 3:39 5:03 fastest in the field
Sled pull: 2:32 3:29 faster than 98%
Run 4: 3:42 5:04 fastest in the field
Burpee broad jump: 2:16 3:10 faster than 93%
Run 5: 3:50 5:11 faster than 98%
Row: 4:02 4:27 faster than 96%
Run 6: 3:47 5:05 faster than 98%
Farmers carry: 1:12 1:36 faster than 98%
Run 7: 3:44 5:03 fastest in the field
Sandbag lunges: 2:31 3:22 faster than 95%
Run 8: 3:52 5:06 faster than 98%
Wall balls: 3:40 4:29 faster than 95%
Roxzone: 4:14 6:09 faster than 98%
Runs (8 km) 30:05 40:27 faster than 98%
Stations (8) 21:18
Finish 55:34 1:13:17 9th of 1,448 · faster than 99%

Full report for this race →This result as data (JSON)

Open Men, 30-34 1:02:41 37th of 2,673; 13th of 679 aged 30-34 32:57 25:23 4:26 Runs 32:57 · Stations 25:23 · Roxzone 4:26

37th of 2,673 Open Men (faster than 98%). Against the 41 who finished around 1:02:10: most time gained on wall balls (0:46), most lost on the eight runs (2:35). Runs 5 to 8 took 1:50 more than runs 1 to 4 (them: 1:12 more).

Stefan Grootkarzijn at HYROX Madrid 2025, Open Men: every split in race order, the typical split of Open Men at this race, and the share of the 2,673 Open Men finishers here who were slower on that part.
Part Time Typical here vs 2,673 Open Men here
Run 1: 3:46 4:27 faster than 89%
SkiErg: 4:15 4:44 faster than 97%
Run 2: 3:47 4:39 faster than 94%
Sled push: 2:11 2:57 faster than 95%
Run 3: 4:00 4:55 faster than 94%
Sled pull: 3:06 4:40 faster than 98%
Run 4: 4:03 4:55 faster than 91%
Burpee broad jump: 3:03 5:22 faster than 98%
Run 5: 4:22 5:06 faster than 84%
Row: 4:15 4:49 faster than 98%
Run 6: 4:07 4:59 faster than 91%
Farmers carry: 1:29 2:19 faster than 98%
Run 7: 4:06 4:57 faster than 91%
Sandbag lunges: 3:26 5:01 faster than 95%
Run 8: 4:51 6:00 faster than 90%
Wall balls: 3:38 6:40 fastest in the field
Roxzone: 4:26 6:48 faster than 97%
Runs (8 km) 32:57 40:17 faster than 92%
Stations (8) 25:23
Finish 1:02:41 1:24:34 37th of 2,673 · faster than 98%

Full report for this race →This result as data (JSON)

Open Men, 30-34 1:06:50 56th of 1,936; 17th of 419 aged 30-34 32:43 29:02 5:09 Runs 32:43 · Stations 29:02 · Roxzone 5:09

56th of 1,936 Open Men (faster than 97%).

Stefan Grootkarzijn at HYROX Maastricht 2025, Open Men: every split in race order, the typical split of Open Men at this race, and the share of the 1,936 Open Men finishers here who were slower on that part.
Part Time Typical here vs 1,936 Open Men here
Run 1: 3:33 4:47 faster than 99%
SkiErg: 3:50 4:29 fastest in the field
Run 2: 3:49 4:45 faster than 94%
Sled push: 2:02 2:41 faster than 93%
Run 3: 4:05 5:05 faster than 93%
Sled pull: 3:55 5:13 faster than 91%
Run 4: 4:04 5:08 faster than 95%
Burpee broad jump: 3:44 5:56 faster than 96%
Run 5: 4:26 5:26 faster than 90%
Row: 4:11 4:47 faster than 98%
Run 6: 4:09 5:14 faster than 94%
Farmers carry: 1:23 2:07 faster than 99%
Run 7: 4:08 5:13 faster than 94%
Sandbag lunges: 3:46 5:12 faster than 91%
Run 8: 4:33 5:58 faster than 94%
Wall balls: 6:11 8:08 faster than 80%
Roxzone: 5:09 7:33 faster than 97%
Runs (8 km) 32:43 41:55 faster than 95%
Stations (8) 29:02
Finish 1:06:50 1:29:04 56th of 1,936 · faster than 97%

Full report for this race →This result as data (JSON)

Open Men, 25-29 1:09:28 123rd of 1,541; 37th of 349 aged 25-29 32:00 32:04 5:28 Runs 32:00 · Stations 32:04 · Roxzone 5:28

123rd of 1,541 Open Men (faster than 92%). Against the 48 who finished around 1:10:40: most time gained on the eight runs (1:33), most lost on wall balls (1:25). Runs 5 to 8 took 1:36 more than runs 1 to 4 (them: 1:23 more).

Stefan Grootkarzijn at HYROX Heerenveen 2025, Open Men: every split in race order, the typical split of Open Men at this race, and the share of the 1,541 Open Men finishers here who were slower on that part.
Part Time Typical here vs 1,541 Open Men here
Run 1: 3:32 4:30 faster than 94%
SkiErg: 4:21 4:25 faster than 61%
Run 2: 3:46 4:39 faster than 94%
Sled push: 2:31 2:46 faster than 72%
Run 3: 3:58 4:58 faster than 94%
Sled pull: 3:54 4:48 faster than 83%
Run 4: 3:58 5:00 faster than 94%
Burpee broad jump: 4:33 5:43 faster than 81%
Run 5: 4:12 5:11 faster than 92%
Row: 4:25 4:48 faster than 90%
Run 6: 3:59 5:02 faster than 95%
Farmers carry: 1:27 2:06 faster than 97%
Run 7: 4:04 5:04 faster than 93%
Sandbag lunges: 4:28 5:09 faster than 73%
Run 8: 4:35 5:47 faster than 91%
Wall balls: 6:25 6:25 faster than 50%
Roxzone: 5:28 8:10 faster than 98%
Runs (8 km) 32:00 40:18 faster than 94%
Stations (8) 32:04
Finish 1:09:28 1:25:19 123rd of 1,541 · faster than 92%

Full report for this race →This result as data (JSON)

How to read

Place is the position among timed finishers in the same race, division and gender; a doubles place is the team's. Runs is the organiser's official run total (it can differ from the eight laps added up by a few seconds), stations the eight stations added up, and roxzone the time moving between them. The age group is the one entered for that race; for a team it is the team’s age group. A dash means the organiser did not publish that number for the result. * At that edition running was under 44% of the typical finish (48% is normal): the timing mats counted some running as station time, so its runs look faster and its stations slower than they were.

Best splits · Open Men

The fastest Stefan has done each station

Part Best Race Typical
SkiErg 3:50 Maastricht 2025 · best of 7 4:34
Sled push 2:02 Maastricht 2025 · best of 7 3:04
Sled pull 2:46 Heerenveen 2026 · best of 7 4:57
Burpee broad jump 2:16 Heerenveen 2026 · best of 7 5:38
Row 4:05 Amsterdam 2026 · best of 7 4:53
Farmers carry 1:23 Maastricht 2025 · best of 7 2:11
Sandbag lunges 2:44 Heerenveen 2026 · best of 7 5:20
Wall balls 3:31 Maastricht 2026 · best of 7 7:03
Runs (8 km) 30:37 Heerenveen 2026 · best of 7 41:47
Roxzone 4:08 Rotterdam 2026 · best of 7 7:23
How to read

Each station's best across Stefan's Open Men races, from different races, against the typical Open Men split. Venues differ (sled carpets, run laps, where the mats sit), so a best can owe something to the venue.

Raced with

2 team partners

From the team results above. A name opens the search: a partner can have more than one page.

Station profile · best Open Men race

Amsterdam 2026, against 2,802 Open Men

Full race report →

Shape of the race

50% SkiPushPullBBJRowCarryLungesWall ballsRoxzoneRuns
Stefanedge = faster than everyone, centre = slowest

This chart shows where Stefan sat in the field on each part of the race: the edge is faster than everyone, the centre is the slowest.Strongest on BBJ (faster than 99% of the field), weakest on Push (faster than 95%).

See the numbers
Part Stefan: faster than
Ski 98%
Push 95%
Pull 99%
BBJ 99%
Row 99%
Carry 97%
Lunges 99%
Wall balls 98%
Roxzone 99%
Runs 98%

Further out means you beat more of the field on that part. A dent is a weak spot.

How you ranked on each station

SkiErg faster than 98%
Sled push faster than 95%
Sled pull faster than 99%
Burpee broad jump faster than 99%
Row faster than 99%
Farmers carry faster than 97%
Sandbag lunges faster than 99%
Wall balls faster than 98%
Roxzone faster than 99%
Runs (8 km) faster than 98%

How much of the field Stefan beat on each part of the race, at this race.Best: Burpee broad jump (faster than 99%); weakest: Sled push (faster than 95%).

Longer is better: the share of the field you beat.

Minutes against the typical finisher

SkiErg 0:30 faster
Sled push 0:45 faster
Sled pull 1:34 faster
Burpee broad jump 2:55 faster
Row 0:39 faster
Farmers carry 0:35 faster
Sandbag lunges 2:12 faster
Wall balls 2:56 faster
Roxzone 2:36 faster
Runs (8 km) 9:39 faster

Stefan's time on each part against the typical Open Men finisher at this race.Best: Runs (8 km) (9:39 faster); weakest: SkiErg (0:30 faster).

Green, left of centre: faster than the typical Open Men finisher at this race. Orange, right: slower, and by how much.

The race as one bar: Stefan against the typical Open Men finisher

Stefan59:06
2:553:573:382:133:493:093:552:294:084:053:581:263:552:544:304:044:09
Typical Open Men1:23:18
3:514:274:462:585:054:435:065:245:154:445:082:015:065:065:537:006:45
RunsStationsRoxzone (moving between stations)

This chart draws the race in order, left to right: each 1 km run (blue), each station (yellow) and the roxzone (grey), sized by its time.Stefan: 30:49 running, 24:17 at the stations and 4:09 in the roxzone; the longest station was the row (4:05).Below, Typical Open Men: 40:10 running, 36:23 at the stations and 6:45 in the roxzone; the longest station was the wall balls (7:00).

See the numbers
Part Stefan Typical Open Men
Run 1 2:55 3:51
SkiErg 3:57 4:27
Run 2 3:38 4:46
Sled push 2:13 2:58
Run 3 3:49 5:05
Sled pull 3:09 4:43
Run 4 3:55 5:06
Burpee broad jump 2:29 5:24
Run 5 4:08 5:15
Row 4:05 4:44
Run 6 3:58 5:08
Farmers carry 1:26 2:01
Run 7 3:55 5:06
Sandbag lunges 2:54 5:06
Run 8 4:30 5:53
Wall balls 4:04 7:00
Roxzone 4:09 6:45
Finish 59:06 1:24:13

The race in order, left to right. A wider block than the one below is slower than typical.

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